Topaz Solar Farm
Solar power plant in San Luis Obispo County, California. 585.9 MW of nameplate capacity across 5 generators, operated by Topaz Solar Farms LLC.
Also known as EIA plant 57695
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 585.9 MWNameplate
- Generators
- 5 operatingEIA-860M, August 2026
- Operating since
- April 2013First generator online
- Operator
- Topaz Solar Farms LLCEIA operator ID 59874
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 1 CAISO nodeResource nodes with prices
- Location
- San Luis Obispo County, CA35.4056, −120.0686
- EIA plant ID
- 57695EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Topaz Solar Farm produces
Free · EIA-923Net generation, 2025
1.02 TWh
1,018,564 MWh, final
Capacity factor, 2025
19.8%
2024: 20.8%
January to July 2026
524 GWh
Provisional
Range, 2015 to 2025
1.0–1.3
TWh a year. Low 2025, high 2018
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | 401,308 | Not reported | 11 of 12 |
| 2014 | 1,105,857 | Not reported | 12 of 12 |
| 2015 | 1,301,337 | 25.4% | 12 of 12 |
| 2016 | 1,265,760 | 24.6% | 12 of 12 |
| 2017 | 1,237,532 | 24.1% | 12 of 12 |
| 2018 | 1,335,727 | 26.0% | 12 of 12 |
| 2019 | 1,255,722 | 24.5% | 12 of 12 |
| 2020 | 1,282,716 | 24.9% | 12 of 12 |
| 2021 | 1,300,788 | 25.3% | 12 of 12 |
| 2022 | 1,221,410 | 23.8% | 12 of 12 |
| 2023 | 1,036,774 | 20.2% | 12 of 12 |
| 2024 | 1,071,076 | 20.8% | 12 of 12 |
| 2025 | 1,018,564 | 19.8% | 12 of 12 |
| 2026 (provisional, partial year) | 523,715 | 17.6% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · CAISOEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| TPZ1 | Solar Photovoltaic | 129.8 | April 2013 |
| TPZ2 | Solar Photovoltaic | 151.2 | June 2013 |
| TPZ3 | Solar Photovoltaic | 102.1 | January 2014 |
| TPZ4 | Solar Photovoltaic | 90.3 | November 2014 |
| TPZ5 | Solar Photovoltaic | 112.5 | October 2014 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Topaz Solar Farms LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Modeled curtailment
A range, not one number. The lower bound counts hours inside the production tax credit window; the upper bound is the no-credit case.
Expected vs reported generation
Monthly modeled expected output and physical potential next to EIA-923 reported output.
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Questions about Topaz Solar Farm
How much power does Topaz Solar Farm produce?
Topaz Solar Farm reported 1,018,564 MWh (1.02 TWh) of net generation in 2025, a 19.8% capacity factor on 585.9 MW of nameplate capacity. From January to July 2026 it reported 524 GWh, which is provisional.
Where is Topaz Solar Farm?
Topaz Solar Farm is in San Luis Obispo County, California, at 35.4056, −120.0686. It is in the California Independent System Operator balancing area (CISO).
Who operates Topaz Solar Farm?
EIA-860M for August 2026 lists Topaz Solar Farms LLC as the operator (EIA operator ID 59874). The operator is not always the owner.
When did Topaz Solar Farm start operating?
Its first generator began operating in April 2013, according to EIA-860M.
Does InfraMap have power prices for Topaz Solar Farm?
Yes. InfraMap has CAISO day-ahead and real-time prices at 1 price node linked to Topaz Solar Farm, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- CAISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page